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| -rw-r--r-- | gnu/packages/haskell-xyz.scm | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/gnu/packages/haskell-xyz.scm b/gnu/packages/haskell-xyz.scm index 0b32de78ce..0594c5ea6f 100644 --- a/gnu/packages/haskell-xyz.scm +++ b/gnu/packages/haskell-xyz.scm @@ -3017,6 +3017,35 @@ It is modeled after doctest for Python, see between double precision floating point and text.") (license license:bsd-3))) +(define-public ghc-dual-tree + (package + (name "ghc-dual-tree") + (version "0.2.2.1") + (source + (origin + (method url-fetch) + (uri (string-append "https://hackage.haskell.org/package/" + "dual-tree/dual-tree-" version ".tar.gz")) + (sha256 + (base32 + "17kdfnf0df0z5pkiifxrlmyd1xd7hjjaazd2kzyajl0gd00vbszx")))) + (build-system haskell-build-system) + (inputs + `(("ghc-semigroups" ,ghc-semigroups) + ("ghc-newtype-generics" ,ghc-newtype-generics) + ("ghc-monoid-extras" ,ghc-monoid-extras))) + (native-inputs + `(("ghc-quickcheck" ,ghc-quickcheck) + ("ghc-testing-feat" ,ghc-testing-feat))) + (home-page "https://hackage.haskell.org/package/dual-tree") + (synopsis "Rose trees with cached and accumulating monoidal annotations") + (description "Rose (@math{n}-ary) trees with both upwards- (i.e. +cached) and downwards-traveling (i.e. accumulating) monoidal +annotations. This is used as the core data structure underlying the +@url{https://archives.haskell.org/projects.haskell.org/diagrams/, +diagrams framework}, but potentially has other applications as well.") + (license license:bsd-3))) + (define-public ghc-easy-file (package (name "ghc-easy-file") |